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Trionymus  Berg, 1899
Taxonomic Serial No.: 200977

(Download Help) Trionymus TSN 200977

 Taxonomy and Nomenclature
       
  Kingdom: Animalia  
  Taxonomic Rank: Genus  
  Synonym(s): Westwoodia Signoret, 1875
  
    Pergandiella Cockerell, 1899
  
    Bergrothula Strand, 1928
  
    Bergrothia Kraatz, 1888
  
    Signoretia Kraatz, 1888
  
    Bergrothiella Reitter, 1898
  
    Cintococcus Goux, 1940
  
    Ripersia (Cintococcus) Goux, 1940
  
  Common Name(s):    
       
  Taxonomic Status:    
  Current Standing: valid  
       
  Data Quality Indicators:    
  Record Credibility Rating: verified - standards met  
  Global Species Completeness: complete   
  Latest Record Review: 2025   
       

 Taxonomic Hierarchy
       
 KingdomAnimalia  – Animal, animaux, animals  
    SubkingdomBilateria  – triploblasts  
       InfrakingdomProtostomia   
          SuperphylumEcdysozoa   
             PhylumArthropoda  – Artrópode, arthropodes, arthropods  
                SubphylumHexapoda  – hexapods  
                   ClassInsecta  – insects, hexapoda, inseto, insectes  
                      SubclassPterygota  – insects ailés, winged insects  
                         InfraclassNeoptera  – modern, wing-folding insects  
                            SuperorderAcercaria   
                               OrderHemiptera Linnaeus, 1758 – true bugs, hemipterans  
                                  SuborderSternorrhyncha   
                                     SuperfamilyCoccoidea Fallén, 1814 – scales, mealybugs, coccids  
                                        FamilyPseudococcidae Cockerell, 1905 – mealybugs  
                                           GenusTrionymus Berg, 1899  
    Direct Children:  
                                              Species Trionymus aberrans Goux, 1938 – aberrant mealybug 
                                              Species Trionymus acomus De Lotto, 1964  
                                              Species Trionymus agrestis Wang and Zhang, 1990  
                                              Species Trionymus agropyronicola Tang in Tang and Li, 1988  
                                              Species Trionymus agrostis (Wu, 1999)  
                                              Species Trionymus americanus (Cockerell, 1899) – American grass mealybug 
                                              Species Trionymus apoensis (Lit, 1992)  
                                              Species Trionymus apoxys Williams, 2004  
                                              Species Trionymus aristidae Williams, 1985  
                                              Species Trionymus arnicae Siraiwa, 1939  
                                              Species Trionymus artemisiarum (Borchsenius, 1949)  
                                              Species Trionymus ascripticius Williams, 1985  
                                              Species Trionymus austrinus Granara de Willink, 2003  
                                              Species Trionymus bambusae (Green, 1922)  
                                              Species Trionymus bocheri Gertsson and Hodgson, 2005  
                                              Species Trionymus boratynskii Danzig, 1983  
                                              Species Trionymus borchsenii (Danzig, 1983)  
                                              Species Trionymus bruneiensis Williams, 2004  
                                              Species Trionymus caricis McConnell, 1941 – carex mealybug, Carex mealybug 
                                              Species Trionymus caucasicus (Danzig, 1985)  
                                              Species Trionymus circulus Tang in Tang and Li, 1988  
                                              Species Trionymus clandestinis McConnell, 1941  
                                              Species Trionymus claviger (King and Tinsley, 1897)  
                                              Species Trionymus cogonicola Williams, 2004  
                                              Species Trionymus colchicus (Hadzibejli, 1960)  
                                              Species Trionymus copiosus (Borchsenius, 1949)  
                                              Species Trionymus coronus Miller and McKenzie, 1971  
                                              Species Trionymus corsicus (Balachowsky, 1933)  
                                              Species Trionymus cynodontis (Kiritchenko, 1932)  
                                              Species Trionymus dactylis (Green, 1925)  
                                              Species Trionymus dactyloctenii Mamet, 1943  
                                              Species Trionymus dagestanicus Danzig, 1998  
                                              Species Trionymus danzigae (Kozár and Kosztarab, 1976) – Danzig's mealybug 
                                              Species Trionymus demertor De Lotto, 1964  
                                              Species Trionymus dilatatus Danzig, 1971  
                                              Species Trionymus diminutus (Leonardi, 1918) – New Zealand flax mealybug 
                                              Species Trionymus dolus Ferris, 1950 – dolus mealybug 
                                              Species Trionymus faratsi Mamet, 1962  
                                              Species Trionymus festucae (Kuwana, 1901) – north coast mealybug 
                                              Species Trionymus formosanus Takahashi, 1930  
                                              Species Trionymus frontalis McKenzie, 1967 – frontal grass mealybug 
                                              Species Trionymus funiuensis Wu, 1999  
                                              Species Trionymus glomerulus (De Lotto, 1961)  
                                              Species Trionymus gyrus Williams, 1985  
                                              Species Trionymus haancheni McKenzie, 1960 – haanchen barley mealybug, Haanchen barley mealybug 
                                              Species Trionymus hamberdi (Borchsenius, 1949) – Hamberd's mealybug 
                                              Species Trionymus heterelymus Hodgson and Gertsson, 2012  
                                              Species Trionymus hypoestis (James, 1935)  
                                              Species Trionymus icelandensis Gero and Szita, 2025  
                                              Species Trionymus idahoensis Miller and McKenzie, 1971  
                                              Species Trionymus inaequalis (James, 1935)  
                                              Species Trionymus incertus Green, 1931  
                                              Species Trionymus insularis Ehrhorn, 1916  
                                              Species Trionymus interjecti Bueker, 1931  
                                              Species Trionymus internodii (Hall, 1923)  
                                              Species Trionymus jonesi Williams, 2004  
                                              Species Trionymus kerzhneri Danzig and Gavrilov-Zamin, 2015  
                                              Species Trionymus kirgisicus (Borchsenius, 1949)  
                                              Species Trionymus kobotokensis Kanda, 1959  
                                              Species Trionymus latus Takahashi, 1929  
                                              Species Trionymus levis Borchsenius, 1937 – aberrant mealybug 
                                              Species Trionymus longissimus De Lotto, 1964  
                                              Species Trionymus lowryi Brachman and Kosztarab in Kosztarab, 1996 – Lowry mealybug 
                                              Species Trionymus magnus (Cockerell, 1901) – magnus mealybug 
                                              Species Trionymus masrensis Hall, 1925  
                                              Species Trionymus massiliensis (Goux, 1941)  
                                              Species Trionymus mocus Ferris, 1953 – mocker grass mealybug 
                                              Species Trionymus modocensis (Ferris, 1953) – modoc grass mealybug 
                                              Species Trionymus mongolicus (Danzig, 1969)  
                                              Species Trionymus mori Lobdell, 1930  
                                              Species Trionymus multisetiger (Borchsenius, 1949)  
                                              Species Trionymus myersi McKenzie, 1961 – Myers mealybug 
                                              Species Trionymus myrmecarius (Leonardi, 1908)  
                                              Species Trionymus nanus Cockerell, 1905  
                                              Species Trionymus nepalicus Williams, 2004  
                                              Species Trionymus newsteadi (Green, 1917) – beech mealybug 
                                              Species Trionymus nicotianacola Williams and Granara de Willink, 1992  
                                              Species Trionymus nudus (James, 1935)  
                                              Species Trionymus oblongus De Lotto, 1964  
                                              Species Trionymus okiensis Tanaka, 2018  
                                              Species Trionymus oncueri Kaydan and Yerlikaya, 2021  
                                              Species Trionymus orientalis (Danzig and Ivanova, 1976)  
                                              Species Trionymus palauensis Beardsley, 1966  
                                              Species Trionymus periolanus (Goux, 1953)  
                                              Species Trionymus perrisii (Signoret, 1875) – Perris' grass mealybug, Guernsey grass mealybug 
                                              Species Trionymus petiolicola (H. Morrison, 1922)  
                                              Species Trionymus phalaridis (Green, 1925) – canarygrass mealybug, Canarygrass mealybug, Komosinska's mealybug 
                                              Species Trionymus phragmitis (Hall, 1923) – Hall's Reed mealybug 
                                              Species Trionymus pietranerae Goux, 1941  
                                              Species Trionymus placatus (Borchsenius, 1949) – pleasant grass mealybug 
                                              Species Trionymus polyporus Hall, 1924  
                                              Species Trionymus prolatus De Lotto, 1961  
                                              Species Trionymus quadricirculus McKenzie, 1967 – square circulus mealybug 
                                              Species Trionymus radicicola (H. Morrison, 1926)  
                                              Species Trionymus radicum (Newstead, 1895) – solitary mealybug, thrift root mealybug 
                                              Species Trionymus rhizophilus De Lotto, 1964  
                                              Species Trionymus rotundatus (James, 1935)  
                                              Species Trionymus santilongoi (Mazzeo, 1995)  
                                              Species Trionymus scaramellai Marotta and Tranfaglia, 1994  
                                              Species Trionymus sengirkumensis Gavrilov-Zimin and Kurochkin, 2019  
                                              Species Trionymus smithii (Essig, 1910) – Smith grass mealybug 
                                              Species Trionymus sternlichti (Williams, 1958)  
                                              Species Trionymus strongylus Miller and McKenzie, 1971  
                                              Species Trionymus summus (Lit, 1992)  
                                              Species Trionymus tasmanianus Williams, 1985  
                                              Species Trionymus terranora Williams, 1985  
                                              Species Trionymus tetralocularis Amun et al., 2021  
                                              Species Trionymus themedae (James, 1936)  
                                              Species Trionymus thulensis Green, 1931 – northern mealybug 
                                              Species Trionymus townesi Beardsley, 1966 – cereal mealybug 
                                              Species Trionymus tumidus (Newstead, 1897)  
                                              Species Trionymus turgidus (Borchsenius, 1949)  
                                              Species Trionymus utahensis (Cockerell, 1916) – Utah grass mealybug 
                                              Species Trionymus vaginatus Matesova, 1968  
                                              Species Trionymus violascens Cockerell, 1913 – dusky grass mealybug, violet-colored mealybug 
                                              Species Trionymus williamsi Ezzat, 1959  
                                              Species Trionymus winnemucae McKenzie, 1967 – Winnemuca grass mealybug 
                                              Species Trionymus yaelae Bodenheimer, 1943  
                                              Species Trionymus zebedielae De Lotto, 1964  
                                              Species Trionymus zhejiangensis (Li and Wu, 2014)  
                                              Species Trionymus zoysiae Williams, 1985  
       

 References
       
  Expert(s):    
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  Other Source(s):    
  Source: NODC Taxonomic Code, database (version 8.0)  
  Acquired: 1996   
  Notes:    
  Reference for: Trionymus   
       
  Source: ScaleNet, 11/2025, Database (version undefined)  
  Acquired: 2025   
  Notes: García Morales, M., B. D. Denno, D. R. Miller, G. L. Miller, Y. Ben-Dov, and N. B. Hardy. 2016. ScaleNet: A literature-based model of scale insect biology and systematics. Database. doi: 10.1093/database/bav118. https://scalenet.info   
  Reference for: Trionymus   
       
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